Machine for manufacturing paper plant protectors



June 13, 1950 w, SCHINDLER 2,511,417

MACHINE FOR MANUFACTURING PAPER PLANT PROTECTORS Filed Dec. 31, 1948 8 Shee'tS-Sheet 1 Q 44 ,numnln June 13, 1950 w, s Np E my 2,511,417

MACHINE FOR MANUFACTURING PAPER PLANT PROTECTORS Filed Dec. 31, 1948 8 Sheets-Sheet 2 J I m N 22mm 51. Mimdizfi/ INVENTOR.

June 13, 1950 W. R. SCHINDLER 2,511,417

MACHINE FOR- MANUFACTURING PAPER PLANT PROTECTORS Filed Dec. 31, 1948 h 8 Sheets-Sheet 4 H3 7 i l 6 IIF [[[HTHHIIII WAX/17w 1.15m

' INVENTOR. BY a r4 June 13, 1950 w. R. SICHINDLER I 2,511,417

MACHINE FOR MANUFACTURING-PAPER PLANT 'Rbmcrdiqs Filed Dec. 51, 194's a Sheets-Sheet 5 INVENTOR.

w. R. SCHJNDLER June 13, 1950 2,511,411

MACHINE FOR MANUFACTURING PAPER PLANT PROTECTORS "a Sheets-Sheet e Filed Dec. 31, 1948 I INVENTOR'.

June 1950 w. R. SCHINDLER 2,511,417

MACHINE FOR MANUFACTURING PAPER PLANT PROTECTORS Filed Dec. 51, 1948 -8 Sheets-Sheet '7 /5 CA /4I waw/ufiAcm/ndew.

IN V EN TOR.

Fig/11 BY June 1950 w. R. SCHINDLER 2,511,417

MACHINE FOR MANUFACTURING PAPER PLANT PROTECTORS Filed Dec. 51 1948 r a Sheets-Sheet 8 C- gig mawmlw IN V EN TOR.

Wag A Patented June 13, 1950 UNITED ESTATES PATENT OFFICE MACHINE .FOR MANUFACTURING PAPER- PLANT PROTECTORS Application December 31, 1948, Serial N 0. 68,565

7 Claims.

My invention comprises a machine for manufacturing paper plant protectors :and .more :spe- =cifica1ly to a machine for manufacturing areinforced paper tent which is placed ever growing plantsito protect them from the weather.

Other objects and advantages of myiinvention will :be apparent from the following description of the preferred embodiments thereof.

In the drawings:

Figure 1 is a side elevational view of my machine;

Figure :2 is a top plan view taken on the line 2-2 of Figure 1;

Figure '3 is aneelevation' taken on the line 3-3 of Figure 1;

Figure 4 is a section taken on the line 4-4 of Figure 1:

Figure 5 is a side elevation taken .on the line 5--5 of Figure 3';

Figure '6 is asection'taken on the line .66 of Figure 4;

Figure 7 is .a section taken on the line'l-"l of Figure 5;

Figure 8 is a. sectiontaken on the iine '8-8 "of Figure 3;

Figure -9 is :a top plan viewta'ken ':on the line 99 of Figure 11;

Figure 1'0"is a section taken on *theline ill-I 0 of Figure 9;

Figure 11 is a sectiontaken ion the line Ll-11 of Figure Figure 12 :is .a section taken .on the line 12-12 of Figure 11;

Figure '13 is a section taken on the line 13-43 of Figure 4;

Figure 14 is a perspective view of 11118711152118 and female dies in open position;

Figure 15 is a perspective view "of the male and female dies in :closed position; and

Figure 16 is a perspective view sofwthe plant protector "manufactured by my machine.

The machine of .my present inventionzis adaptedrfor use in conjunction with my copending application on a machine for manufacturing reinforced paper 'andthe :present invention uses the reinforced paper formed by the machine described in that application. Such a paper comprises a continuoussheet .of waxed paper which has two parallel wires attached thereto and glued in position by paper straps glued over the wire on to the sheet.

in Figure 16 is illustrated a perspective view of'the plant :protector manufactured by this invention. The plant protector .or tent is formed nt acsingle :blank of paper and by thezuse ofmale mg down the cutter l6.

2 and female dies it is shaped and folded to make a paper protector l -having arectangular bottom withends 2 and 3 extending upwardly therefrom and sides 4 and 5. Over the sides 4 and 5 in a continuou form is attached a reinforcing wire 6 glued to the body of the paper tent by paper straps l. The bottom of the paper protector is open and to reinforce the same a cuff 8 extends around the perimeter of the base. These paper tents are placed over young plants 'to protect them from the weather.

Into the machine of my present invention is fed a continuous sheet of waxed paper 9 to form the above-set-forth paper tent. This waxed paper has the wires 6 and paper straps 1 running continuous of its length. My present invention is preferably situated adjacent the end 0f the machine for manufacturing reinforced paper as set forth above so that the product of that machine p'asses therefrom into the machine comprising the present invention.

The reinforced paper 9 is'fed in between a pair of pressure rollers Ill and II which are driven by means of a sprocket l2 and chain I3 at a-constant speed. The pressure rolls H! are formed of sponge rubber and the rollers H are of steel or other hard material. The paper 4) is fed on to *a bed plate 14 mounted upon a frame 1'5 past a cutter knife H5. The cutter knife It is actuated in an up and down movement by push rods I! connected to lever arms I8 'fulcrumed to the journaled shaft I'll by a clevis 20.

Attached to the shaft I9 is an actuating arm 2| carrying a cam roller 22 at its opposite end. The cam roller 22 is adapted to ride upon a. cam tit-on a shaft 24. The cam 23 is adapted to operate .in a clockwise direction as shown by the arrow in Figure 5 and when the cam roller 22 strikes the boss 25 on the cam '23, the lever 2| is lifted, rotating the shaft 19, forcing downwardly the lever arms 18 and push rods l1, pull- After the boss 25 has gone past the cam roller '22 the roller 22 returns to the normal surface of thecam 23 by-the action of the spring 26 which raises the cutter [6. As the cutter it is operating through wire and paper it may stick and I therefore provide an arm 26 on the shaft 19 with a roller 21 at its end adapted to he struck by a cam block 28 on the cam 23 to rotate the shaft [9 and lift the push rods 11 and cutter H5. The cutter It thus slices off the sheet of paper 9 into the desirable lengths or sections l! for forming a plant protector. The cam 23 is made of such size and length as to cut off the desiredlengths of paper for one tent.

A prime mover such as an electric motor 29 drives the shaft 24 at a constant speed by means of a train of gears 39 and chain 3|. A sprocket 32 on the shaft 24 drives the sprocket 33 on the shaft 34 by means of th chain 35. A sprocket 35 on the shaft 34 is connected to the sprocket I2 by the chain I3.

To permit the insertion of the paper 9 in the machine the pressure rolls II] are rotatably held in position by clevises 31 attached to a shaft 38 journaled to the frame I5.

An idler pressure roll 36 is held in position by the arms 40 attached to the shaft 38. By rotation of the shaft 38 both the rollers I and 39 may be lifted. to permit insertion of the paper 9 on to the bed plate M.

The paper 9, at the time that it is cut off into a section 4| of a size to form a plant protector, extends between the speed-up rollers 42, 43, 44, 45 and 46. The rollers 42, 43, and 44 are held by clevises 41 upon a shaft 48 journaled to the frame I5, and are free to rotate in their clevises. These rolls 42, 43 and 44 are made of steel or other similar material, and have triangular grooves 49 to engage upon the paper 9 or section 4| directly over the Wires 6.

The rolls 45 and 46 are made of sponge rubber and are positioned directly under the rolls 42, 43 and 44. The rolls 45 and 46 are mounted upon a sleeve 50 rotatively positioned on the shaft The shaft 5| is driven by a sprocket 52 and chain 53, connecting the sprockets 52 with a sprocket 54 on the shaft 34. However, the sprocket 54 is larger than either of the sprockets 52, so that the rotation of the shaft 5| is at a higher speed than the rotation of the roller II.

A clutch mechanism comprises a collar 55 upon the shaft 5| adjacent one end of the sleeve 50. Between the collar 55 and the sleeve 5!! is positioned a rubber slip washer 56. The collar 55 is held to the shaft 5| by a setscrew 51 engaging a keyway 51a, and is urged toward the sleeve 50 by a spring 58 to place a pressure upon the washer 56 when the paper 9 passes under the cutter I6 and between the speed-up rollers. Prior to the cutting-off action by the cutter I6 the sleeve 50 will slide on the shaft 5| without speeding up the movement of the paper 9. However, after the paper 9 is released by the action of the cutter I6 slicing it off and forming it into a section 4|, the pressure of the collar 55 and the washer 56 will cause the sleeve 50 and rollers 45 and 46 to turn at the accelerated. speed, thus giving added impetus to the paper section 4! to clear it out of position ready for the reception of another section of paper to be cut ofi by the cutter I6. The speed-up rollers 42 to 46, inclusively, force the paper section 4| into position against the stops 68 and under the guides 6 I At this position the paper is supported upon a pair of guide plates 82 and 63 which have grooved under surfaces 64 and 65 around forming rolls 66 and 61, The forming rolls 66 and 61 are supported by rods 88 and 69 from shafts and 1| journaled on a hanger 12 extending upwardly from the frame I5.

Arms 13 and 14 are attached to the shafts 18 and 1| by clevises and 16. Springs 11 connect the arms 13 and 14 to swing the rods 68 and 69 to- Wards each other, urging the forming rolls 66 and 61 towards each other.

Spacers 18 are provided to maintain the form ing rolls 66 and 61 partially separated. Directly below the forming rolls 66 and 01, and centered 4 thereon, is a shaft journaled in the frame I5 and carrying thereon four equally spaced female dies 8 I. The shape of the female dies is the same as the outside shape of the finished plant protector tent I.

It should be noted that the female dies are mounted at the four poles of the shaft 80, and one is open to receive the paper section 4| as it is pressed down by the male die 82.

The male die 82 is supported by the cross-beam 83 which is adapted to slide up and down in guides 84 in the hanger 12. An ofi-center sprocket 85 is carried by the shaft I80 and the chain 86 passes around the sprocket 85 over a sprocket 81 on a shaft 88 over an eccentric sprocket 89 on the shaft 80 and around an idler sprocket 9| mounted upon a shaft 92 journaled upon the arm 93 pivotally attached to the frame I 5 at 94.

A spring 95 maintains tension upon the sprocket 9| to hold the chain 86 tight upon the sprockets 85, 81, 89 and 9|.

The shaft I00 is driven by the chain 3| from the prime mover 29. Attached to the shaft 80 is a Geneva gear II", which is driven by the dog I02 carried upon a Geneva cam I03 attached to the shaft 88. The dog I02 thus rotates the Geneva gear IUI in quarter turns at an intermittent motion as the shaft 88 is revolved by the chain 86.

The shaft 88 and the sprocket 81 are not rotated at a constant speed because of the off-center positions of the sprockets 85 and 89. As the dog I02 engages the Geneva gear I0| this off-centering causes the rotation of the shaft 88 to be speeded up, thus giving a sharp, quick motion to the Geneva gear IOI. Acam follower I04, mounted upon a clevis I05 is adapted to follow the Geneva gear "II, and after the dog I02 has rotated the Geneva gear |0I a quarter turn the cam follower I04 maintains it in a fixed position until the next revolution of the Geneva cam I03.

Rotation of the Geneva gear I0| causes the shaft 80 to rotate the female dies 8| a quarter turn, thus placing a different one under the male die at each quarter rotation of the shaft 80. The shaft 80 carries a flywheel I06 at each end thereof. On the flywheel I06, near the perimeter, are journaled the push rods I01 which are connected with the cross-beam 83.

Rotation of the shaft 80 and flywheel I06 causes the cross-beam 83 to be raised and lowered in cycle with the rotation of the female die 8|. Thus at each quarter turn of the shaft 80 the male die 82 is forced into the female die 8| by pulling the cross-beam 83 downwardly by the push rods I01. To help in returning the male die to its upper position and to take a portion of the strain, the springs I08 are attached to the cross-beam 83.

As the male die 82 descends it carries with it the rods III] which are slidable therein, and which carry at their lower extremities the guides 6|. The weight of the guides 6| and the rods I I0 hold the paper section 4| in position and prevent it from bulging up as the male die 82 strikes. In fact, the guides 6| start the paper section 4| downwardly between the forming rolls 66 and 61, and prevent the sides from curling inwardly. The rods I I0 have at their upper extremities shafts III which extend laterally and pass through slots H2 in brackets II3. When the shafts III strike the bottom of the slots II2, further downward motion of rods I I0 and guides 6| is stopped. Upon the upper movement of the cross-beam. 83 the :rods. H D are lifted by them]- lars .I I4 engaging the top of the cross-beam.

As. the male die 82 strikes the paperv section 41. and. forces the same downwardly between the forming rolls 66 and 61, the forming rolls are spread apart as rods 68 and 69 are pivoted at H5 to the hanger I2. This spreads the forming rolls 66 andfil, and 62V and 63, so that the paper section II. is pressed by the male die 82- downwardly into thefemale die BI. Upon the return stroke of the male die the springs I! pull the forming rolls 66 and 6'! back togetheragainst the spacer I8; To dampen this action and to prevent any jar, I provide the arms H6 and, I H which are connected together by the damping cylinder II'8; which allows. the. spring to pull the rods .68 and 69 back together, but not with av hard crash.

The shape of. the male and female dies: 82' and 81- are'clearlyshown in Figures 14 and 15,.respectively.

To cause a more perfect folding of the paper section M as it entersthe female die 8|, guide rolls I mounted on. arms I2I pivoted on the frame l5 are used. These force the paper sec-- tion III to enter the female die 8i moreperfectly, and are held in tension against it by the springs I22. A lever- I23 attached intermediate the arms I'2I causes a rotation of a lever I24 and actuates the guides I25 against the paper, also aiding in maintaining the paper ina better folded condition..

To form the cuff 8 upon the paper. protector flanges I26 are provided upon the male die 82 which cooperate with the flanges I50 on the female die 8|. To insure that the male die will make a striking blow when it enters the female die 82, and also a jerky action during its Withdrawal, the male die 82 is connected to crossbeam 83 by means of pistons I2? sliding in the bores I26 in the subframe I29 of the male. die 82. Thepistons I21 are attached to a hanger I38- attached to the. cross-beam 83. Springs I-i-I are provided between the hanger I36 and the subframe I29. As the male die 82 is presseddownwardly the lower ends I32 of the hanger i 3% strike the. upper edges I33 of the subframe HQ, giving the same a jolt. Upon raising the cross-beam t3 the hanger I56. first rises, separating the surfaces I32 and I33 until the tension generated in the spring I3I is suificient to snap the entiremale die 82 out of the female die 8 I.

The. pistons I2! in the bores 528 act as guides to maintain the entire male die 52 in alignment.

As the paper protector tents I are formed in the female die upon each quarter rotation of the female die 8i, one tent remains in the position shown at I49 in Figure 1. To remove the tent I40 from the: female die 8|, I provide guide arms I4I attached to the frame Id, extending downwardly thereon, upon which a hanger frame N22 is supported by guide rollers I433. The. hanger frame I42 is attached to. a tent catcher I44 which has projecting hooks I45 with a plurality of catching fingers I45 extending toward the tent I40.

Links I41 connect the hanger frame I42 with lever arms I48 held upon the shaft 24 by clevises I59. As the shaft 24 is rotated the arms I48 are caused to rotate, pulling the. links 14? inwardly and outwardly, so that the hanger frame M2 moves back and forth on the guide arms MI and the projecting hooks I45 engage the tents i4ll, pulling these tents from the female die. As successive tents are removed from the female die 8| the prior tents are forced inwardly on the fingers I46 until the catcher I44 is full, whereupon anoperator can graban entire stackof. tentsat onetime for shipp While-I have described the preferred embodimerits of myinvention, I amnot limited to any of. the detailshereinset forth except as described in the following claims.

I. claim:-

1. Ina machine of the class described, a bed frame, a pair of feed rollers driven at a constant speed. by a prime mover and adapted to feed a sheet of paper onto-said frame, a cutting: mechanism adapted to out said sheet into substantially equal sections, speed rolls carried by said. bed frame and. adapted to urge saidpaper along said bed frame, a slipping clutch connecting. said speedrolls and said prime mover and adapted to engage and drive said cut-01f paper sections. at a higher speed than said feed rollers, male and female dies carried by said bed frame andv adapted to shape. said paper. section into. a paper tent,- said speed'rollers feeding said paper sections into. a guide between said male and female. dies, said guide. comprising a pair of forming rolls each pivotally suspended upon a hanger rod supported above said bed frame and adapted to spread and act as guides, means to maintain said, forming rolls in spaced relationship, said male die mounted uponv a vertical guide member and connected to said prime mover by at Geneva. movement whereby said male. die is forced into said fenule. die in periodic, movements and carries. a paper section with it, and a guide rod carried by said male die andadapted to strike said paper. section and start its movement. between. said forming rolls prior to contactby saidmale die.

2. In. a. machine. of the class. described, a bed frame, a pair of feed rollers driven at a constant speedby aprime mover and adapted to feed a sheet of paper onto said. frame, a cuttingv mechanism adapted tocut said sheet into substantially equal sections, speed rolls carried by said bed frame and adapted to urge said paper along said bed frame, a slipping clutch connecting said speed rolls and said prime mover and adapted to engage and. drive said cut-off. paper sections, at a higher speed. than said feed rollers, male and female dies carried by said bed frame and adapted to shape said paper section into a paper tent, said speed rollers feeding said paper sections. into a guidebetween said male and female dies, said guide comprising a pair of forming rolls each pivotally suspended upon a hanger rod supported above said bed frame and adapted to spread and act. as guides, means to maintain said forming rolls in spaced relationship, said male die mounted upon: a vertical guide member and connected to said prime over by a Geneva movement whereby said male die is forced into said female die in periodic movements and carries a paper section with it,. a guide rod carried by said male. dieand adapted to strike saidpaper section and start its movement between. said forming rolls prior to contact by said male die, and guide members to fold said paper sections.

3'. In a machine of the class described, a; bed frame; a pair of feed rollers driven at a constant speed by a prime mover and adapted to feed a sheet of paperonto. said frame, a cutting mechan-ism adapted to out said sheet into substantially equal sections, speed rolls carried by said bed frame and adapted to urge said paper along said bed frame, a slipping clutch connecting said speed rolls and said prime mover and adapted to engage and drive said cut-off paper sections. at a higher speed than said feed rollers, male and female dies carried by said bed frame and adapted to shape said paper section into a paper tent, said speed roller feeding said paper sections into a guide between said male and female dies, said male die mounted upon a vertical guide member and connected to said prime mover by a Geneva movement whereby said male die is forced into said female die in periodic movements and carries a paper section with it, said male die having anvil means therein to jolt said male die at the end of its downward stroke and sprin means to snap said die out of said female die on its upward stroke.

4. In a machine of the class described, a bed frame, a pair of feed rollers driven at a constant speed by a prime mover and adapted to feed a sheet of paper into said frame, a cutting mecha nism adapted to cut said sheet into substantially equal sections, speed rolls carried by said bed frame and adapted to urge said paper along said bed frame, a slipping clutch connecting said speed rolls and said prime mover and adapted to en gage and drive said cut-off paper sections at a higher speed than said feed rollers, male and female dies carried by said bed frame and adapted to shape said paper section into a paper tent, said speed rollers feeding said paper sections into a guide between said male and female dies, said guide comprising a pair of forming rolls each pivotally suspended upon a hanger rod supported above said bed frame and adapted to spread and act as guides, and means to maintain said forming rolls in spaced relationship, said male die mounted upon a vertical guide member and connected to said prime mover by a Geneva movement whereby said male die is forced into said female die in periodic movements and carries a paper section with it, said male die having anvil means therein to jolt said male die at the end of its downward stroke and spring means to snap said die out of said female die on its upward stroke.

5. In a machine of the class described, a bed frame, a pair of feed rollers driven at a constant speed by a prime mover and adapted to feed a sheet of paper onto said frame, a cutting mechanism adapted to out said sheet into substantially equal sections, speed rolls carried by said bed frame and adapted to urge said paper along said bed frame, a slipping clutch connecting said speed rolls and said prime mover and adapted to engage and drive said cut-off paper sections at a higher speed than said feed rollers, male and female dies carried by said bed frame and adapted to shape said paper section into a paper tent, said speed rollers feeding said paper sections into a guide between said male and female dies, said male die mounted upon a vertical guide member and connected to said prime mover by a geneva movement whereby said male die is forced into said female die in periodic movements and carries a paper section with it, said male die having anvil means therein to jolt said male die at the end of its downward stroke and spring means to snap said die out of said female die on its upward stroke, said female die comprising a plurality of similar dies equally spaced around a rotatable shaft, and means to rotate said shaft so that said male die enters a difierent one of said female die on each of its periodic strokes.

' 6. In a machine of the class described, a bed frame, a pair of feed rollers driven at a constant speed by a prime mover and adapted to feed a sheet of paper onto said frame, a cutting mechanism adapted to cut said sheet into substantially equal sections, speed roll carried by said bed frame and adapted to urge said paper along said bed frame, a slipping clutch connecting said speed rolls and said prime mover and adapted to engage and drive said cut-off paper sections at a higher speed than said feed rollers, male and female dies carried by said bed frame and adapted to shape said paper section into a paper tent, said speed rollers feeding said paper sections into a guide between said male and female dies, said guide comprising a pair of forming rolls each pivotally suspended upon a hanger rod supported above said bed frame and adapted to spread and act as guides, means to maintain said forming rolls in spaced relationship, said male die mounted upon a vertical guide member and connected to said prime moved by a Geneva movement whereby said male die is forced into said female die in periodic movements and carries a paper section with it, said male die having anvil means therein to jolt said male die at the end of its downward stroke and spring means to snap said die out of said female die on its upward stroke, said female die comprising a plurality of similar dies equally spaced around a rotatable shaft, and means to rotate said shaft so that said male die enters a different one of said female dies on each of its periodic strokes.

I. In a machine of the class described, a bed frame, a pair of feed rollers driven at a constant speed by a prime mover and adapted to feed a sheet of paper onto said frame, a cutting mechanism adapted to out said sheet into substantially equal sections, speed rolls carried by said bed frame and adapted to urge said paper along said bed frame, a slipping cultch connecting said speed rolls and said prime mover and adapted to engage and drive said cut-01f paper sections at a higher speed than said feed rollers, male and female dies carried by said bed frame and adapted to shape said paper section into a paper tent, said speed rollers feeding said paper sections into a guide between said male and female dies, said male die mounted upon a vertical guide member and connected to said prime mover by a Geneva movement whereby said male die is forced into said female die in periodic movements and carries a paper section with it, said male die having anvil means therein to jolt said male die at the end of its downward stroke and spring means to snap said die out of said female die on its upward stroke, said female die comprising a plurality of similar dies equally spaced around a rotatable shaft, and means to rotate said shaft so that said male die enters a different .one of said female dies on each of its periodic strokes, a catcher mounted upon guides and having fingers to engage the paper tents formed in said female dies, said catcher actuated by said prime mover to enter and withdraw from said female dies to withdraw said paper tents.

WALTER R. SCl-IINDLER.

CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,291,482 Greenstreet Jan. 14, 1919 1,757,804 Joplin May 6, 1930 2,136,990 Daller Nov. 15, 1938 

